|
| US4093028 | 7. Sept. 1976 | 6. Juni 1978 | Orpha B. Brandon | Methods of use of cementitious materials and sonic or energy-carrying waves within subsurface formations |
| US4223732 | 7. Sept. 1978 | 23. Sept. 1980 | Societe National Elf Aquitaine (Production) | Microemulsions for use as spaces in well cementation |
| US4381241 | 23. Febr. 1981 | 26. Apr. 1983 | Dow Corning Corporation | Invert emulsions for well-drilling comprising a polydiorganosiloxane and method therefor |
| US4542791 | 16. Nov. 1984 | 24. Sept. 1985 | Exxon Research & Engineering Company | Method for plugging wellbores with polycarboxylic acid shear thickening composition |
| US5030366 | 27. Nov. 1989 | 9. Juli 1991 | Atlantic Richfield Company | Spacer fluids |
| US5034139 | 19. Juni 1989 | 23. Juli 1991 | Nalco Chemical Company | Polymer composition comprising phosphorous-containing gelling agent and process thereof |
| US5552377 | 20. Apr. 1993 | 3. Sept. 1996 | | Mud sweep and spacer composition |
| US6225264 | 22. Dez. 1999 | 1. Mai 2001 | Benchmark Research & Technology | Suspended delayed borate cross-linker |
| US6251838 | 2. Okt. 1998 | 26. Juni 2001 | Benchmark Research & Technologies, Inc. | Suspended delayed borate cross-linker |
| US6554069 | 15. Aug. 2002 | 29. Apr. 2003 | Halliburton Energy Services, Inc. | Methods of removing water-based drilling fluids and compositions |
| US6762155 | 28. Febr. 2003 | 13. Juli 2004 | Halliburton Energy Services, Inc. | Methods of removing water-based drilling fluids and compositions |
| US7278487 | 19. Juni 2006 | 9. Okt. 2007 | Halliburton Energy Services, Inc. | Methods of using chemical wash compositions for removing drilling fluids |
| US7455111 | 2. Febr. 2007 | 25. Nov. 2008 | BJ Services Company | Compositions for treating a well penetrating a subterranean formation and uses thereof |
| US7481273 | 18. Juni 2007 | 27. Jan. 2009 | BJ Services Company | Method of using water-in-oil emulsion to remove oil base or synthetic oil base filter cake |
| US7662752 | 19. Juni 2006 | 16. Febr. 2010 | Halliburton Energy Services, Inc. | Chemical wash compositions for removing drilling fluids |
